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SVM Support, by Alexander Graf.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3210 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-09-23 15:28:04 +00:00
parent bbbb2f0af9
commit 0573fbfc3f
9 changed files with 921 additions and 15 deletions
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243
target-i386/translate.c
View file

@ -1995,6 +1995,98 @@ static void gen_movl_seg_T0(DisasContext *s, int seg_reg, target_ulong cur_eip)
}
}
#ifdef TARGET_X86_64
#define SVM_movq_T1_im(x) gen_op_movq_T1_im64((x) >> 32, x)
#else
#define SVM_movq_T1_im(x) gen_op_movl_T1_im(x)
#endif
static inline int
gen_svm_check_io(DisasContext *s, target_ulong pc_start, uint64_t type)
{
#if !defined(CONFIG_USER_ONLY)
if(s->flags & (1ULL << INTERCEPT_IOIO_PROT)) {
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
SVM_movq_T1_im(s->pc - s->cs_base);
gen_jmp_im(pc_start - s->cs_base);
gen_op_geneflags();
gen_op_svm_check_intercept_io((uint32_t)(type >> 32), (uint32_t)type);
s->cc_op = CC_OP_DYNAMIC;
/* FIXME: maybe we could move the io intercept vector to the TB as well
so we know if this is an EOB or not ... let's assume it's not
for now. */
}
#endif
return 0;
}
static inline int svm_is_rep(int prefixes)
{
return ((prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) ? 8 : 0);
}
static inline int
gen_svm_check_intercept_param(DisasContext *s, target_ulong pc_start,
uint64_t type, uint64_t param)
{
if(!(s->flags & (INTERCEPT_SVM_MASK)))
/* no SVM activated */
return 0;
switch(type) {
/* CRx and DRx reads/writes */
case SVM_EXIT_READ_CR0 ... SVM_EXIT_EXCP_BASE - 1:
if (s->cc_op != CC_OP_DYNAMIC) {
gen_op_set_cc_op(s->cc_op);
s->cc_op = CC_OP_DYNAMIC;
}
gen_jmp_im(pc_start - s->cs_base);
SVM_movq_T1_im(param);
gen_op_geneflags();
gen_op_svm_check_intercept_param((uint32_t)(type >> 32), (uint32_t)type);
/* this is a special case as we do not know if the interception occurs
so we assume there was none */
return 0;
case SVM_EXIT_MSR:
if(s->flags & (1ULL << INTERCEPT_MSR_PROT)) {
if (s->cc_op != CC_OP_DYNAMIC) {
gen_op_set_cc_op(s->cc_op);
s->cc_op = CC_OP_DYNAMIC;
}
gen_jmp_im(pc_start - s->cs_base);
SVM_movq_T1_im(param);
gen_op_geneflags();
gen_op_svm_check_intercept_param((uint32_t)(type >> 32), (uint32_t)type);
/* this is a special case as we do not know if the interception occurs
so we assume there was none */
return 0;
}
break;
default:
if(s->flags & (1ULL << ((type - SVM_EXIT_INTR) + INTERCEPT_INTR))) {
if (s->cc_op != CC_OP_DYNAMIC) {
gen_op_set_cc_op(s->cc_op);
s->cc_op = CC_OP_EFLAGS;
}
gen_jmp_im(pc_start - s->cs_base);
SVM_movq_T1_im(param);
gen_op_geneflags();
gen_op_svm_vmexit(type >> 32, type);
/* we can optimize this one so TBs don't get longer
than up to vmexit */
gen_eob(s);
return 1;
}
}
return 0;
}
static inline int
gen_svm_check_intercept(DisasContext *s, target_ulong pc_start, uint64_t type)
{
return gen_svm_check_intercept_param(s, pc_start, type, 0);
}
static inline void gen_stack_update(DisasContext *s, int addend)
{
#ifdef TARGET_X86_64
@ -4880,6 +4972,12 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
else
ot = dflag ? OT_LONG : OT_WORD;
gen_check_io(s, ot, 1, pc_start - s->cs_base);
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
gen_op_andl_T0_ffff();
if (gen_svm_check_io(s, pc_start,
SVM_IOIO_TYPE_MASK | (1 << (4+ot)) |
svm_is_rep(prefixes) | 4 | (1 << (7+s->aflag))))
break;
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
gen_repz_ins(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
} else {
@ -4893,6 +4991,12 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
else
ot = dflag ? OT_LONG : OT_WORD;
gen_check_io(s, ot, 1, pc_start - s->cs_base);
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
gen_op_andl_T0_ffff();
if (gen_svm_check_io(s, pc_start,
(1 << (4+ot)) | svm_is_rep(prefixes) |
4 | (1 << (7+s->aflag))))
break;
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
gen_repz_outs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
} else {
@ -4902,6 +5006,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
/************************/
/* port I/O */
case 0xe4:
case 0xe5:
if ((b & 1) == 0)
@ -4911,6 +5016,10 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
val = ldub_code(s->pc++);
gen_op_movl_T0_im(val);
gen_check_io(s, ot, 0, pc_start - s->cs_base);
if (gen_svm_check_io(s, pc_start,
SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) |
(1 << (4+ot))))
break;
gen_op_in[ot]();
gen_op_mov_reg_T1[ot][R_EAX]();
break;
@ -4923,6 +5032,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
val = ldub_code(s->pc++);
gen_op_movl_T0_im(val);
gen_check_io(s, ot, 0, pc_start - s->cs_base);
if (gen_svm_check_io(s, pc_start, svm_is_rep(prefixes) |
(1 << (4+ot))))
break;
gen_op_mov_TN_reg[ot][1][R_EAX]();
gen_op_out[ot]();
break;
@ -4935,6 +5047,10 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
gen_op_andl_T0_ffff();
gen_check_io(s, ot, 0, pc_start - s->cs_base);
if (gen_svm_check_io(s, pc_start,
SVM_IOIO_TYPE_MASK | svm_is_rep(prefixes) |
(1 << (4+ot))))
break;
gen_op_in[ot]();
gen_op_mov_reg_T1[ot][R_EAX]();
break;
@ -4947,6 +5063,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
gen_op_andl_T0_ffff();
gen_check_io(s, ot, 0, pc_start - s->cs_base);
if (gen_svm_check_io(s, pc_start,
svm_is_rep(prefixes) | (1 << (4+ot))))
break;
gen_op_mov_TN_reg[ot][1][R_EAX]();
gen_op_out[ot]();
break;
@ -5004,6 +5123,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
val = 0;
goto do_lret;
case 0xcf: /* iret */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_IRET))
break;
if (!s->pe) {
/* real mode */
gen_op_iret_real(s->dflag);
@ -5125,6 +5246,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
/************************/
/* flags */
case 0x9c: /* pushf */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_PUSHF))
break;
if (s->vm86 && s->iopl != 3) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
@ -5135,6 +5258,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
}
break;
case 0x9d: /* popf */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_POPF))
break;
if (s->vm86 && s->iopl != 3) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
@ -5348,6 +5473,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
/* XXX: correct lock test for all insn */
if (prefixes & PREFIX_LOCK)
goto illegal_op;
if (prefixes & PREFIX_REPZ) {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_PAUSE);
}
break;
case 0x9b: /* fwait */
if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
@ -5361,10 +5489,14 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
}
break;
case 0xcc: /* int3 */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
break;
gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base);
break;
case 0xcd: /* int N */
val = ldub_code(s->pc++);
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
break;
if (s->vm86 && s->iopl != 3) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
@ -5374,12 +5506,16 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 0xce: /* into */
if (CODE64(s))
goto illegal_op;
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SWINT))
break;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(pc_start - s->cs_base);
gen_op_into(s->pc - pc_start);
break;
case 0xf1: /* icebp (undocumented, exits to external debugger) */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_ICEBP))
break;
#if 1
gen_debug(s, pc_start - s->cs_base);
#else
@ -5415,6 +5551,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_set_inhibit_irq();
/* give a chance to handle pending irqs */
gen_jmp_im(s->pc - s->cs_base);
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VINTR))
break;
gen_eob(s);
} else {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
@ -5507,13 +5645,21 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (b & 2)
int retval = 0;
if (b & 2) {
retval = gen_svm_check_intercept_param(s, pc_start, SVM_EXIT_MSR, 0);
gen_op_rdmsr();
else
} else {
retval = gen_svm_check_intercept_param(s, pc_start, SVM_EXIT_MSR, 1);
gen_op_wrmsr();
}
if(retval)
gen_eob(s);
}
break;
case 0x131: /* rdtsc */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_RDTSC))
break;
gen_jmp_im(pc_start - s->cs_base);
gen_op_rdtsc();
break;
@ -5576,12 +5722,16 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
break;
#endif
case 0x1a2: /* cpuid */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_CPUID))
break;
gen_op_cpuid();
break;
case 0xf4: /* hlt */
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_HLT))
break;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(s->pc - s->cs_base);
@ -5597,6 +5747,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 0: /* sldt */
if (!s->pe || s->vm86)
goto illegal_op;
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_READ))
break;
gen_op_movl_T0_env(offsetof(CPUX86State,ldt.selector));
ot = OT_WORD;
if (mod == 3)
@ -5609,6 +5761,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_LDTR_WRITE))
break;
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
gen_jmp_im(pc_start - s->cs_base);
gen_op_lldt_T0();
@ -5617,6 +5771,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 1: /* str */
if (!s->pe || s->vm86)
goto illegal_op;
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_READ))
break;
gen_op_movl_T0_env(offsetof(CPUX86State,tr.selector));
ot = OT_WORD;
if (mod == 3)
@ -5629,6 +5785,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_TR_WRITE))
break;
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
gen_jmp_im(pc_start - s->cs_base);
gen_op_ltr_T0();
@ -5660,6 +5818,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 0: /* sgdt */
if (mod == 3)
goto illegal_op;
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_GDTR_READ))
break;
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_movl_T0_env(offsetof(CPUX86State, gdt.limit));
gen_op_st_T0_A0[OT_WORD + s->mem_index]();
@ -5676,6 +5836,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) ||
s->cpl != 0)
goto illegal_op;
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_MONITOR))
break;
gen_jmp_im(pc_start - s->cs_base);
#ifdef TARGET_X86_64
if (s->aflag == 2) {
@ -5700,6 +5862,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_set_cc_op(s->cc_op);
s->cc_op = CC_OP_DYNAMIC;
}
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_MWAIT))
break;
gen_jmp_im(s->pc - s->cs_base);
gen_op_mwait();
gen_eob(s);
@ -5708,6 +5872,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
}
} else { /* sidt */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_IDTR_READ))
break;
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_movl_T0_env(offsetof(CPUX86State, idt.limit));
gen_op_st_T0_A0[OT_WORD + s->mem_index]();
@ -5720,11 +5886,63 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
break;
case 2: /* lgdt */
case 3: /* lidt */
if (mod == 3)
goto illegal_op;
if (s->cpl != 0) {
if (mod == 3) {
switch(rm) {
case 0: /* VMRUN */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMRUN))
break;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(s->pc - s->cs_base);
gen_op_vmrun();
s->cc_op = CC_OP_EFLAGS;
gen_eob(s);
break;
case 1: /* VMMCALL */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMMCALL))
break;
/* FIXME: cause #UD if hflags & SVM */
gen_op_vmmcall();
break;
case 2: /* VMLOAD */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMLOAD))
break;
gen_op_vmload();
break;
case 3: /* VMSAVE */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_VMSAVE))
break;
gen_op_vmsave();
break;
case 4: /* STGI */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_STGI))
break;
gen_op_stgi();
break;
case 5: /* CLGI */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_CLGI))
break;
gen_op_clgi();
break;
case 6: /* SKINIT */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_SKINIT))
break;
gen_op_skinit();
break;
case 7: /* INVLPGA */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVLPGA))
break;
gen_op_invlpga();
break;
default:
goto illegal_op;
}
} else if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start,
op==2 ? SVM_EXIT_GDTR_WRITE : SVM_EXIT_IDTR_WRITE))
break;
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_ld_T1_A0[OT_WORD + s->mem_index]();
gen_add_A0_im(s, 2);
@ -5741,6 +5959,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
}
break;
case 4: /* smsw */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0))
break;
gen_op_movl_T0_env(offsetof(CPUX86State,cr[0]));
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 1);
break;
@ -5748,6 +5968,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0))
break;
gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
gen_op_lmsw_T0();
gen_jmp_im(s->pc - s->cs_base);
@ -5772,6 +5994,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
goto illegal_op;
}
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVLPG))
break;
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
gen_op_invlpg_A0();
gen_jmp_im(s->pc - s->cs_base);
@ -5788,6 +6012,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_INVD))
break;
/* nothing to do */
}
break;
@ -5908,11 +6134,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 4:
case 8:
if (b & 2) {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0 + reg);
gen_op_mov_TN_reg[ot][0][rm]();
gen_op_movl_crN_T0(reg);
gen_jmp_im(s->pc - s->cs_base);
gen_eob(s);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0 + reg);
#if !defined(CONFIG_USER_ONLY)
if (reg == 8)
gen_op_movtl_T0_cr8();
@ -5945,11 +6173,13 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (reg == 4 || reg == 5 || reg >= 8)
goto illegal_op;
if (b & 2) {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_DR0 + reg);
gen_op_mov_TN_reg[ot][0][rm]();
gen_op_movl_drN_T0(reg);
gen_jmp_im(s->pc - s->cs_base);
gen_eob(s);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_DR0 + reg);
gen_op_movtl_T0_env(offsetof(CPUX86State,dr[reg]));
gen_op_mov_reg_T0[ot][rm]();
}
@ -5959,6 +6189,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (s->cpl != 0) {
gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
} else {
gen_svm_check_intercept(s, pc_start, SVM_EXIT_WRITE_CR0);
gen_op_clts();
/* abort block because static cpu state changed */
gen_jmp_im(s->pc - s->cs_base);
@ -6050,6 +6281,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
/* ignore for now */
break;
case 0x1aa: /* rsm */
if (gen_svm_check_intercept(s, pc_start, SVM_EXIT_RSM))
break;
if (!(s->flags & HF_SMM_MASK))
goto illegal_op;
if (s->cc_op != CC_OP_DYNAMIC) {